Fluid connector and connecting end and mating end thereof

Abstract

A connecting end of a fluid connector configured to be matingly connected to a mating end (200). The connecting end (100) comprises a first valve seat (2-1) and a first valve (1-1) movably arranged on the first valve seat (2-1). The first valve (1-1) is provided with a locking hole (13) for insertion of a stopping pin (14) on the mating end (200). The first valve seat (2-1) is provided with an unlocking pin (15). When the first valve (1-1) moves to a preset position, the unlocking pin (15) can eject the stopping pin (14). Moreover, in a process in which the first valve (1-1) moves to disengage from the preset position, the first valve (1-1) can push the unlocking pin (15) to move, providing clearance in the locking hole (13) to allow for the entry of the stopping pin (14). Provided are a mating end configured to be mated with the connecting end of a fluid connector, and a fluid connector comprising the connecting end and the mating end. The connecting end of the fluid connector can solve the problem that a valve of the mating end disengages from a constraint in advance, thereby solving the problem of leakage caused by the valve of the mating end disengaging from the constraint in advance.

Description

Fluid connectors and their connecting ends and mating ends

[0001] This application claims priority to Chinese Patent Application No. 202410844557.7, filed on June 26, 2024, entitled "Fluid Connector and Connecting End and Dating End Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of fluid channel connection technology, and more specifically, to a connecting end of a fluid connector, a mating end of a fluid connector, and a fluid connector. Background Technology

[0003] A fluid connector mainly consists of two connectors. These two connectors can have the same or different structures and are connected by mating. For ease of description, one connector is generally called the connecting end, and the other connector that mates with the connecting end is called the mating end.

[0004] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art:

[0005] When connecting the connector and the mating end, a snap-fit ​​connection is generally required, and then the valve on the opposite side is pushed to rotate together. When disassembling, the valve needs to be rotated first to close it, and then the snap-fit ​​is released. However, long-term research has found that during disassembly, the valve on the mating end may be driven to rotate to release the snap-fit ​​first, causing the valve on the mating end to be released from the constraint prematurely, which may lead to leakage problems. Summary of the Invention

[0006] In view of this, the first objective of the present invention is to provide a connection end of a fluid connector that can effectively solve the problem of premature valve release from constraint at the docking end. The second objective of the present invention is to provide a fluid connector. The third objective of the present invention is to provide a docking end of a fluid connector.

[0007] To achieve the first objective mentioned above, the present invention provides the following technical solution:

[0008] A fluid connector has a connecting end for mating with a docking end. The connecting end includes a first valve seat and a first valve movably disposed on the first valve seat. The first valve has a locking hole for inserting a stop pin on the docking end. The first valve seat has an unlocking pin. When the first valve moves to a preset position, the unlocking pin can push out the stop pin. And when the first valve moves away from the preset position, the first valve can push the unlocking pin to open the locking hole so that the stop pin can enter.

[0009] In the above technical solution, during use, when the first valve is not in the preset position, the stop pin is inserted into the locking hole, and the movement of the mating end with the stop pin can drive the first valve to move, ensuring synchronous movement. When the first valve is driven to the preset position, such as when it moves from the open state to the preset position, and moves to the preset position, the unlocking pin pushes out the stop pin, allowing the mating end with the stop pin to move relative to the first valve. If the mating end with the stop pin can continue to move relative to the first valve, the connection between the connecting end and the mating end is disengaged, as described later in the disengagement latching. When in the preset position, the corresponding structure on the mating end pushes the first valve to move, such as pushing the first valve to move in the direction of opening the communication channel of the first valve seat. At this time, the valve movement can unlock the pin to move, allowing the locking hole to be opened, so that the stop pin can enter. In the aforementioned connection, during use, after the valve disengages from the preset position, when the first valve and the mating end equipped with the stop pin need to move synchronously, the unlocking pin creates a cavity in the locking hole, allowing the stop pin to enter the locking hole and ensure synchronous movement. When the mating end equipped with the stop pin moves the first valve to the preset position, the unlocking pin pushes the stop pin out of the locking hole, freeing it from constraining the relative position of the first valve and the mating end. At this point, the second valve or valve seat equipped with the stop pin can move relative to the first valve, thus disengaging the connection and mating end. In summary, this fluid connector effectively solves the problem of premature valve disengagement at the mating end, effectively addressing leakage caused by premature valve disengagement.

[0010] In some technical solutions, the locking hole is disposed through the first valve, and the first end of the locking hole can be used for the insertion of the stop pin, and the second end is aligned with the unlocking pin when the preset position is reached.

[0011] In some technical solutions, a movable top block is provided in the locking hole. One end of the unlocking pin abuts against the valve seat through a first elastic device, and the other end has a pushing ball surface. The pushing ball surface abuts against the top block. When the first valve moves to a preset position, the pushing ball surface pushes the top block toward the first end of the locking hole to push out the stop pin. And during the process of the first valve rotating to get away from the preset position, the first valve can act on the pushing ball surface to push the unlocking pin away from the second end of the locking hole.

[0012] In some technical solutions, the unlocking pin is a spherical body.

[0013] In some technical solutions, the cross-sectional area of ​​the second end is larger than that of the first end, so as to prevent the top block from disengaging from the locking hole from the second end.

[0014] In some technical solutions, the connecting end has a first locking part for locking with the second locking part of the docking end, the first valve has a slot, and the first valve seat is movably connected with a blocking member. The blocking member extends into the slot to prevent the first valve from moving relative to the first valve seat, and can be pushed away from the slot by the pushing part of the docking end after the locking shoulder locks with the docking end and the first valve is located in the preset position.

[0015] In some technical solutions, the first valve is provided with a groove for engaging with the hook at the docking end, and at least one groove has an opening at its inner end. The end of the groove facing the opening forms a first locking part to engage with a second locking part formed on the hook.

[0016] In some technical solutions, the first valve has a plurality of slots evenly arranged along a circumference, the inner side of one end of the slot along the circumferential direction is the first locking part, and the inner side of the slot forms a receiving groove for accommodating the hook part of the hook, and at least one receiving groove is the slot to correspond to the blocking member.

[0017] In some technical solutions, one end of the slot is aligned with the corresponding end of the corresponding slot along the circumferential direction, and the other end is longer than the corresponding end of the corresponding slot, so that the bottom of the slot forms the first locking part; the first valve is rotatably mounted on the first valve seat and the axis of rotation is consistent with the axis of the circumference of the slot distribution.

[0018] In some technical solutions, the blocking member has a groove for engaging with the end of the pushing part, and the groove has a first groove wall forming an inclined surface along the pushing direction of the pushing part, so as to abut against the pushing part and be pushed out of the groove when the pushing part moves in the pushing direction.

[0019] In some technical solutions, the groove forms an inclined surface on the second groove wall along the pushing direction of the pushing part, so as to cooperate with the avoidance inclined surface formed by the pushing part on the rear side in the pushing direction.

[0020] In some technical solutions, the blocking member abuts against the first valve seat via a second elastic device, so as to push the blocking member into the slot via the second elastic device.

[0021] To achieve the second objective mentioned above, the present invention also provides a fluid connector, which includes any of the aforementioned connecting ends and a mating end, the connecting end being capable of mating with the mating end. Since the aforementioned connecting ends possess the above-described technical effects, the fluid connector having such connecting ends should also possess corresponding technical effects.

[0022] In some technical solutions, the docking end includes a second valve and a second valve seat. The second valve is equipped with a stop pin, and the second valve and the first valve of the connecting end are snap-fitted together. When the stop pin and the locking hole on the first valve are aligned, the second valve and the first valve are aligned with each other, and at this time the first valve and the second valve are snap-fitted together.

[0023] In some technical solutions, the stop pin abuts against the second valve through a third elastic device and is slidably installed on the second valve; the second valve is provided with a hook, and the first valve is provided with a groove to achieve a snap-fit ​​connection; the second valve is rotatably installed on the second valve seat and the rotation axis is consistent with the rotation axis of the first valve, and the outer side of the second valve seat has an operating structure for pushing the second valve to rotate.

[0024] In some technical solutions, the mating end is provided with a positioning pin that can extend into the second valve to prevent the second valve from rotating relative to the second valve seat of the mating end; the first valve has a push rod to push out the positioning pin when the hook extends into the slot.

[0025] To achieve the second objective mentioned above, the present invention also provides a fluid connector, which includes a connecting end and a mating end as described above. The connecting end includes a valve seat and a valve movably disposed on the valve seat. A locking hole on the valve of the connecting end is provided for insertion of a stop pin on the mating end. An unlocking pin is provided on the valve seat of the connecting end. When the valve of the connecting end rotates to a preset position, the unlocking pin can push out the stop pin; and during the process of the valve of the connecting end rotating to disengage from the preset position, the valve of the connecting end can push the unlocking pin to move, thereby opening the locking hole so that the stop pin can be inserted. Because of the use of the aforementioned stop pin, unlocking pin, and locking hole corresponding to the connecting end, this fluid connector should also have corresponding technical effects.

[0026] To achieve the third objective mentioned above, the present invention also provides a mating end of a fluid connector, which is used to mate with any of the aforementioned connecting ends. The valve of the mating end is provided with a slidable stop pin, which abuts against the valve of the mating end via an elastic device. The sliding direction of the stop pin is perpendicular to the opening and closing direction of the valve of the mating end. Since the aforementioned connecting end has the above-mentioned technical effects, the fluid connector mating with this connecting end should also have corresponding technical effects. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 is a schematic diagram of the exploded structure of the fluid connector provided in an embodiment of the present invention;

[0029] Figure 2 is a partial cross-sectional view of the connection end when the unlocking pin is unlocked according to an embodiment of the present invention;

[0030] Figure 3 is a partial cross-sectional view of the connecting end when the unlocking pin is ejected, according to an embodiment of the present invention.

[0031] Figure 4 is a schematic diagram of the structure of the blocking component provided in an embodiment of the present invention;

[0032] Figure 5 is a cross-sectional structural diagram of the connection end provided in an embodiment of the present invention;

[0033] Figure 6 is an exploded structural diagram of the connection end provided in an embodiment of the present invention;

[0034] Figure 7 is a schematic cross-sectional view of the docking end provided in an embodiment of the present invention;

[0035] Figure 8 is a schematic diagram of the exploded structure of the docking end provided in an embodiment of the present invention;

[0036] Figure 9 is a partial structural schematic diagram of the connecting end valve seat provided in an embodiment of the present invention;

[0037] Figure 10 is a schematic diagram of the connection end valve provided in an embodiment of the present invention;

[0038] Figure 11 is a schematic cross-sectional view of the fluid connector when the hook passes through the slot according to an embodiment of the present invention;

[0039] Figure 12 is a schematic diagram of the structure in which the hook and slot form a rotatable connection according to an embodiment of the present invention.

[0040] The following markings are used in the attached diagram: Connecting end 100; Butt joint end 200; First valve 1-1, Second valve 1-2, First valve seat 2-1, Second valve seat 2-2; Second locking part 3, First locking part 4, Slot 5, Stopping part 6, Hook 7, Slot 8, Operating structure 9; First elastic device 10, Second elastic device 11, Third elastic device 12, Locking hole 13, Stop pin 14, Unlocking pin 15, Top block 16, Push rod 17, Positioning pin 18, Fourth elastic device 19, Sealing ring 20, Connecting channel 21, Connecting hole 22; Groove 6-1, First groove wall 6-2, Second groove wall 6-3; Pushing part 7-1, Avoiding inclined surface 7-2, Handle 7-3, Hook 7-4; Pushing spherical surface 15-1. Detailed Implementation

[0041] This invention discloses a connection end of a fluid connector to effectively solve the problem of valves prematurely disengaging from constraints at the docking end.

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please refer to Figures 1-12. Figure 1 is an exploded structural diagram of the fluid connector provided in an embodiment of the present invention; Figure 2 is a partial cross-sectional structural diagram of the connection end when the unlocking pin is unlocked in an embodiment of the present invention; Figure 3 is a partial cross-sectional structural diagram of the connection end when the unlocking pin is ejected in an embodiment of the present invention; Figure 4 is a structural diagram of the blocking member provided in an embodiment of the present invention; Figure 5 is a cross-sectional structural diagram of the connection end provided in an embodiment of the present invention; Figure 6 is an exploded structural diagram of the connection end provided in an embodiment of the present invention; Figure 7 is a cross-sectional structural diagram of the mating end provided in an embodiment of the present invention; Figure 8 is an exploded structural diagram of the mating end provided in an embodiment of the present invention; Figure 9 is a partial structural diagram of the valve seat of the connection end provided in an embodiment of the present invention; Figure 10 is a structural diagram of the valve of the connection end provided in an embodiment of the present invention; Figure 11 is a cross-sectional structural diagram of the fluid connector when the hook passes through the slot in an embodiment of the present invention; Figure 12 is a structural diagram of the hook and slot forming a rotating connection in an embodiment of the present invention.

[0044] In some embodiments, a fluid connector is provided, including at least two connectors. For ease of description, one connector is a connecting end 100, and the other connector is a mating end 200. The connecting end 100 and the mating end 200 are connected to each other so that, in the connected state, their positions are fixed and their communication channels 21 are connected.

[0045] In some embodiments, at least one connector includes a valve and a valve seat, wherein the valve is movably disposed on the valve seat to open and close the communication channel 21 on the valve seat. When the communication channel 21 is open, fluid can flow between it and the communication channels 21 on other connectors; when the communication channel 21 is closed, fluid cannot flow between it and the communication channels on other connectors. The valve can move in a sliding or rotating manner, etc., and the specific movement can be configured as needed. Generally, the valve has a communication hole 22. When the communication hole 22 on the valve is aligned with the corresponding communication channel 21, the valve opens the corresponding communication channel 21. When the communication hole 22 on the valve and the corresponding communication channel 21 are completely misaligned, the solid portion of the valve blocks the communication channel 21, thereby closing the communication channel 21. Of course, other methods of opening and closing the communication channel 21 are also possible.

[0046] In some embodiments, the connecting end 100 can serve as a connector and be provided with a valve and a valve seat, while the mating end 200 can serve as another mating connector and may or may not be provided with a valve and a valve seat. For ease of description in the context of this invention, the valve of the connecting end 100 can be designated as a first valve 1-1, and the valve seat of the connecting end 100 as a first valve seat 2-1; the valve of the mating end 200 can be designated as a second valve 1-2, and the valve seat of the mating end 200 as a second valve seat 2-2.

[0047] In some embodiments, the first valve 1-1 is provided with a locking hole 13, which can be used for the insertion of a stop pin 14 on the docking end 200. After the stop pin 14 on the docking end 200 is inserted, the second valve 1-2 or valve seat with the stop pin 14 is fixed relative to the first valve 1-1, so that the second valve 1-2 or valve seat with the stop pin 14 can move synchronously with the first valve 1-1, and the synchronous movement is ensured by the stop pin 14. Generally, the former drives the latter to move, so as to realize the opening and closing of the communication channel 21 of the first valve seat 2-1.

[0048] In some embodiments, an unlocking pin 15 may be provided on the first valve seat 2-1 so that when the first valve 1-1 moves to a preset position, the unlocking pin 15 can push out the stop pin 14, preventing the stop pin 14 from being limited. This allows the mating end 200 with the stop pin 14 to move relative to the first valve 1-1, but not to drive the valve. It should be noted that the unlocking pin 15 does not need to push out the stop pin 14 directly; it can be pushed out indirectly. The unlocking pin 15 is not required to be directly installed in the locking hole 13. Indirect pushing out can be achieved through a lever mechanism.

[0049] In some embodiments, during the process of the first valve 1-1 moving to disengage from a preset position, the first valve 1-1 can push the unlocking pin 15 to move, thus clearing the locking hole 13 and allowing the stop pin 14 to enter. It should be noted that the movement of the first valve 1-1 at this time can be achieved by the corresponding mechanism on the mating end 200 where the stop pin 14 is installed, which drives the first valve 1-1 to rotate. The stop pin 14 entering the locking hole 13 primarily restricts relative movement. It should be noted that the preset position can be set as needed, generally with the first valve 1-1 in the open position. It should be noted that the first valve 1-1 being able to push the unlocking pin 15 to move, thus clearing the locking hole 13, can be due to the unlocking pin 15 moving out of the locking hole 13, thereby clearing the corresponding space in the locking hole 13, or it can be due to the movement of the unlocking pin 15 causing the restraint on other structures or causing other structures to disengage from the locking hole 13, thus clearing the locking hole 13. Therefore, this clearing behavior should be understood as being caused by the movement of the locking hole 13.

[0050] In some embodiments, a termination position may exist, such that during the process of the first valve 1-1 moving from a preset position to the termination position, the unlocking pin 15 must retract from the locking hole 13, ensuring that the stop pin 14 enters the locking hole 13, and ensuring that the stop pin 14 enters the locking hole 13 before the first valve 1-1 reaches the termination position. The termination position can be, for example, the open position of the first valve 1-1. That is, after a small movement from the preset position, the movement of the first valve 1-1 can cause the unlocking pin 15 to retract from the locking hole 13.

[0051] In some embodiments, during use, when the first valve 1-1 is not in the preset position, because the stop pin 14 is inserted into the locking hole 13, the mating end 200 with the stop pin 14 can drive the first valve 1-1 to move when it moves, so as to ensure synchronous movement. When the first valve 1-1 is driven to move to the preset position, such as when it moves to the preset position from the open state, and moves to the preset position, the unlocking pin 15 pushes out the stop pin 14, so that the mating end 200 with the stop pin 14 can move relative to the first valve 1-1. If the mating end 200 with the stop pin 14 can continue to move relative to the first valve 1-1, the connection between the connecting end 100 and the mating end 200 is disengaged, as described in the following disengagement latch. When in the preset position, the corresponding structure on the docking end 200 pushes the first valve 1-1 to move, such as pushing the first valve 1-1 to open the first valve seat 2-1 connecting channel 21. At this time, the valve movement can unlock the pin 15 to move, allowing the locking hole 13 to be opened, so that the stop pin 14 can enter. In the above-mentioned connection end 100, during use, after the valve is removed from the preset position, when the first valve 1-1 and the docking end 200 with the stop pin 14 need to move synchronously, the unlocking pin 15 opens the cavity in the locking hole 13, allowing the stop pin 14 to enter the locking hole 13. The stop pin 14 enters the locking hole 13 to ensure synchronous movement. When the mating end 200 with the stop pin 14 moves the first valve 1-1 to the preset position, the unlocking pin 15 pushes the stop pin 14 out of the locking hole 13. This removes the stop pin 14 from constraining the relative position of the first valve 1-1 and the mating end 200 with the stop pin 14. At this point, the second valve 1-2 or valve seat with the stop pin 14 can move relative to the first valve 1-1, thus disengaging the connection end 100 from the mating end 200. In summary, this fluid connector effectively solves the problem of premature valve release from constraint at the mating end 200, effectively addressing the leakage problem caused by premature valve release from constraint at the mating end.

[0052] In some embodiments, the locking hole 13 can be disposed through the first valve 1-1, with the first end of the locking hole 13 for the insertion of the stop pin 14, and the second end aligned with the unlocking pin 15 in a preset position, so that the unlocking pin 15 can directly or indirectly act on the stop pin 14 at the second end to push out the stop pin 14. This avoids the use of too many transmission components, making the structure simpler.

[0053] In some embodiments, it is considered that during the process of the first valve 1-1 moving to disengage from the preset position, the first valve 1-1 can push the unlocking pin 15 to move to make room for the locking hole 13. This makes it impossible for the unlocking pin 15 to extend into too much space in the locking hole 13. However, due to the thickness of the first valve 1-1 and other possible problems, the effect of the unlocking pin 15 directly pushing out the stop pin 14 is not good.

[0054] Therefore, a movable top block 16 is preferably provided inside the locking hole 13, and one end of the unlocking pin 15 abuts against the first valve seat 2-1 through the first elastic device 10, and the other end abuts against one end of the top block 16. The other end of the top block 16 is used to push out the stop pin 14 inside the locking hole 13. This makes it possible for the unlocking pin 15 to not extend too far into the locking hole 13.

[0055] If the depth of the locking hole 13 is greater than the length of the top block 16, and the difference is a preset length, when the top block 16 moves toward the docking end 200, the end of the top block 16 near the docking end 200 is aligned with the corresponding end of the locking hole 13. At this time, the stop pin 14 can be completely ejected, and the other end of the top block 16 will form a groove of a preset length in the locking hole 13. The unlocking pin 15 will then enter the groove by the portion that extends into the preset length under the action of the first elastic device 10. When the first valve 1-1 is in motion, it pushes the unlocking pin 15 to disengage from the locking hole 13, thus opening up the groove. If the locking hole 13 is aligned with the stop pin 14 at this time, the third elastic device 12 corresponding to the stop pin 14 will push the stop pin 14 to abut against the top block 16, so that the stop pin 14 enters the locking hole 13. The entry length can be the preset length mentioned above, or it can be less or greater than the preset length to prevent further entry. The entered part is sufficient to constrain the relative position of the second valve seat 2-2 or the second valve 1-2 and the first valve 1-1, which are equipped with the stop pin 14, to ensure synchronous operation.

[0056] In some embodiments, it should be noted that in the preset position, the unlocking pin 15, under the action of the first elastic device 10, extends into the locking hole 13 to push out the stop pin 14. To ensure the push-out of the stop pin 14, it is preferable that the first elastic device 10 is in a pre-tightened state when the top block 16 is in the ejected position, and the deformation force in the warning state should generally not be less than the deformation force of the third elastic device 12 when the stop pin 14 disengages from the locking hole 13, so as to ensure that the deformation force of the first elastic device 10 can overcome the elastic force of the third elastic device 12, so that the top block 16 is in the ejected position, that is, the stop pin 14 is pushed out. Of course, the entry and exit of the unlocking pin 15 into and out of the locking hole 13 can also be achieved through a linkage mechanism. In this case, the first elastic device 10 can be used or not. For example, when the first valve 1-1 rotates, the unlocking pin 15 can be moved by the linkage between them, such as the crank-slider transmission.

[0057] In some embodiments, during the process of the first valve 1-1 moving to disengage from a preset position, the first valve 1-1 can push the unlocking pin 15 to move. At this time, the direction of movement of the first valve 1-1, i.e., the direction of movement of the locking hole 13, and the direction of movement of the unlocking pin 15 are generally perpendicular to each other. Therefore, the end of the locking hole 13 and the end of the unlocking pin 15 can be abutted by an inclined surface, i.e., at least one of them has the aforementioned inclined surface. Specifically, one end of the unlocking pin 15 can abut against the first valve seat 2-1 through an elastic device, and the other end can have a pushing ball surface 15-1, which abuts against the top block 16. When the first valve 1-1 moves to the preset position, the pushing ball surface 15-1 pushes the top block 16 towards the first end of the locking hole 13 to push out the stop pin 14; and during the process of the first valve 1-1 rotating to disengage from the preset position, the first valve 1-1 can act on the pushing ball surface 15-1 to push the unlocking pin 15 away from the second end of the locking hole 13, thereby freeing the locking hole 13.

[0058] In some embodiments, the unlocking pin 15 can be a spherical body for easy setting and installation. The spherical cavity on the first valve seat 2-1 can serve as a mounting hole for the unlocking pin 15 to prevent it from disengaging from the first valve seat 2-1. Alternatively, the unlocking pin 15 can be a column with one end configured to push the spherical surface 15-1 or other shaped inclined surface to abut against the top block 16.

[0059] In some embodiments, the cross-sectional area of ​​the second end can be larger than that of the first end to prevent the top block 16 from disengaging from the locking hole 13 at the second end. The locking hole 13 is a tapered hole, in which case the top block 16 can be a tapered cylinder. Alternatively, the locking hole 13 can be a stepped hole, and the top block 16 can be a stepped cylinder, such as a two-stage stepped structure, with constraint achieved through the shoulder surface at the step. Simultaneously, through the above constraint, when the top block 16 is ejected, the first elastic device 10 is in a pre-tightened state, i.e., it has already undergone corresponding deformation. Because it is constrained by the locking hole 13, the top block 16 and the unlocking pin 15 do not move further outward.

[0060] In some embodiments, the mating end 200 and the connecting end 100 are engaged by the second locking part 3 and the first locking part 4. This engagement is primarily achieved by the second locking part 3 and the first locking part 4 abutting in the mating direction for locking. The engagement methods include rotational engagement and sliding engagement. Rotational engagement involves the relative rotation of the second locking part 3 and the first locking part 4, causing them to move from a staggered position to a relative position, where they abut in the mating direction. The mating direction can be a generally parallel direction between the mating end 200 and the connecting end 100, or a parallel direction between the connecting channel 21 of the mating end 200 and the connecting end 100. These two directions can be the same or different. The specific structures of the second locking part 3 and the first locking part 4 do not need to be significantly different; generally, one is the hook part 7-4 of the hook 7, and the other is the end of the groove 8 in the groove depth direction or the shoulder formed by the groove wall of the groove 8.

[0061] In some embodiments, the connecting end 100 may have a first snap-fit ​​portion 4 for snap-fit ​​connection with the mating end 200. Specifically, it may be the hook portion 7-4 of the snap hook 7 or the end portion of the slot 8 in the groove depth direction.

[0062] In some embodiments, the first valve 1-1 may have a slot 5, and the first valve seat 2-1 may be movably connected to a stopper 6. The stopper 6 extends into the slot 5 to prevent the first valve 1-1 from moving relative to the first valve seat 2-1, thus keeping the first valve 1-1 in its current position, such as a closed state or a closed state. Specifically, when the slot 5 and the stopper 6 are aligned, the stopper 6 can slide so that one end is inserted into the slot 5 and the other end slides into the sliding hole of the first valve seat 2-1, thereby limiting its movement in the direction perpendicular to the sliding direction. The opening direction of the first valve 1-1 relative to the first valve seat 2-1 is perpendicular to the sliding direction. By cooperating with the stopper 6 and the slot 8, when the first valve 1-1 is subjected to external force, especially frictional force at the mating end 200, the first valve 1-1 cannot move relative to the first valve seat 2-1 under the action of the stopper 6, thus maintaining its current closed position. The blocking element 6 can function as a pin, and its sliding direction can be perpendicular to the movement direction of the first valve 1-1 to better prevent the first valve 1-1 from rotating. Of course, other positions are also possible, as long as they can prevent the first valve 1-1 from rotating, such as the blocking element 6 engaging with the first valve 1-1. It should be noted that the first locking part 4 can be located at the slot 5 or at other structural locations of the first valve 1-1.

[0063] In some embodiments, after the first locking part 4 and the docking end 200 are engaged, the blocking member 6 is pushed out of the slot 5 by the pushing part 7-1 of the docking end 200. This pushing can be direct or indirect. That is, after the blocking member 6 extends into the slot 5, during the engagement between the docking end 200 and the connecting end 100 via the first locking part 4 and the second locking part 3, the first valve 1-1 corresponding to the connecting end 100 of the pushing part 7-1 is activated to push the blocking member 6 in the direction of disengagement from the slot 5. Upon completion of the engagement, the blocking member 6 disengages from the slot 5. Generally, the direction of movement of the second locking part 3 relative to the first locking part 4 is perpendicular to the direction of movement of the blocking member 6. Therefore, a guide slope can be provided between the pushing part 7-1 and the blocking member 6, i.e., at least one guide slope is provided, so that when the pushing part 7-1 moves synchronously with the second locking part 3, it pushes the blocking member 6 to move and disengage from the slot 5, such as the pushing part 7-1 having a guide slope and / or the blocking member 6 having a guide slope. It should be noted that the blocking component 6 is not required to completely detach from the groove 5, but only to ensure that it does not prevent the docking end 200 from driving the first valve 1-1 of the connecting end 100 to rotate. The docking end 200 can drive the first valve 1-1 through the second valve 1-2 of the docking end 200 or through the second valve seat 2-2 of the docking end 200. Therefore, a small amount of frictional resistance is permissible. That is, the aforementioned second locking part 3 and pushing part 7-1 can be provided on the second valve 1-2 or on the second valve seat 2-2. Of course, when the docking end 200 does not have the above structure, it can be provided at any position of the docking end 200 used to drive the first valve 1-1.

[0064] It should also be noted that after the first locking part 4 and the docking end 200 are locked together, it can be considered that at the moment the first locking part 4 and the docking end 200 are locked together, if the limiting of the docking direction is completed, from the docking relationship, the node can be taken as the alignment of the fluid channel on the second valve 1-2 or the second valve seat 2-2 where the pushing part 7-1 is located with the fluid channel of the first valve 1-1. Before rotating to this node, the blocking member 6 is in the slot 5 and is in a blocking state. At this time, the second locking part 3 and the first locking part 4 can be locked together. During the relative rotation to enter this node: the blocking member 6 is pushed by the pushing part 7-1 to gradually move in the direction of disengaging from the slot 8, so that it can preferably disengage from the slot 8 when reaching this node; at the same time, the second locking part 3 and the first locking part 4 move relative to each other in the direction of completing the locking, and can complete the locking at or before the node. From this point onwards, the second valve 1-2 or the second valve seat 2-2 where the actuating part 7-1 is located continues to move. At this time, the first valve 1-1 can be moved by one or more of the actuating part 7-1, the second locking part 3 and other structures in the docking end 200, so as to move in the direction of opening the connecting channel 21 on the first valve seat 2-1.

[0065] In some embodiments, during use, during the docking process of the connecting end 100 and the docking end 200, the connecting end 100 and the docking end 200 first move relative to each other, which may be the whole or a part of the structure moving relative to each other, so that the second locking part 3 and the first locking part 4 complete the locking. During the locking process, the pushing part 7-1 moves with the second locking part 3 to push the blocking member 6 to move relative to the slot 5. After the locking is completed (including the moment of locking), the pushing part 7-1 disengages from the slot 5. This allows the second valve 1-2 or the second valve seat 2-2 of the docking end 200 where the pushing part 7-1 is located to continue rotating, which can push the first valve 1-1 of the connecting end 100 to move until the communication channel 21 of the valve seat of the connecting end 100 is opened. This prevents the first valve 1-1 from rotating relative to the first valve seat 2-1 before the locking mechanism is completed, keeping it in its current state to ensure that the locking is completed first. This also prevents the frictional force on the first valve 1-1 from pushing it to rotate during the locking process, ensuring that the locking and movement of the first valve 1-1 are completed sequentially. In summary, this connection end 100 effectively solves the problem of the valve potentially moving prematurely when the locking process is initiated.

[0066] In some embodiments, the first valve 1-1 is preferably provided with a slot 8, and at least one of the slots 8 has a slot 5 formed at its inner end. The end of the slot 8 facing the slot 5 forms a first locking part 4 to cooperate with a second locking part 3 on the docking end 200. The blocking member 6 is used to abut against a pushing part 7-1 formed on the second locking part 3. Of course, it is not required that all slots 8 have corresponding blocking members 6. Considering that the blocking member 6 mainly overcomes the frictional thrust that the first valve 1-1 may be subjected to, and the thrust is generally relatively small, it is not necessary to provide too many blocking members 6. Only one blocking member 6 can be provided, such as only one slot 8 having the aforementioned slot 5, with the aforementioned blocking member 6 correspondingly provided. By providing a first locking part 4 at the slot 5, a corresponding pushing part 7-1 can be provided with a second locking part 3, so that the second locking part 3 or its related structure can be directly used as the pushing part 7-1, making the structure more compact and avoiding the need for more pushing parts 7-1 on the docking end 200. At this time, the pusher 7-1 can be installed on the second valve seat 2-2, the second valve 1-2, or the operating structure 9.

[0067] In some embodiments, the first valve 1-1 may have a plurality of slots 8 evenly arranged along a circumference to correspond to a plurality of hooks 7. The inner side of one end of the slot 8 along the circumferential direction is a first locking portion 4, forming a receiving groove to accommodate the hook portion 7-4, corresponding to the hook portion 7-4 protruding in the circumferential direction. The side wall of the receiving groove near the slot 8 is the first locking portion 4, forming a shoulder. At least one receiving groove is the slot 5, corresponding to the stopper 6. Correspondingly, the hook portion 7-4 of the hook 7 corresponding to the receiving groove forms the pushing portion 7-1. By circumferentially arranging a plurality of slots 8, a rotational engagement is formed with the corresponding hook 7. That is, the hook portion 7-4 of the hook 7 passes through the slot 8 axially, enters the inner side of the slot 8, and then rotates, causing the hook portion 7-4 and the inner end wall of the slot 8 to abut against each other, forming an axial abutment, thereby completing the engagement. Because the hook 7-4 protrudes circumferentially, the hook 7-4 moves circumferentially first, so that it can complete the engagement with the slot 8, specifically the engagement with the aforementioned shoulder.

[0068] In some embodiments, one end of the slot 5 can be aligned with the corresponding end of the corresponding slot 8 in the circumferential direction, and the other end can be longer than the corresponding end of the slot 8, so that the bottom of the slot 5 forms a first locking part 4, which serves as a receiving space for the hook part 7-4 during locking. In this case, the first valve 1-1 can be rotatably mounted on the first valve seat 2-1 and the axis of rotation can be aligned with the axis of the circumference of the slot 8.

[0069] In some embodiments, the push part 7-1 can be provided alone without the second locking part 3. In this case, the first valve 1-1 can be provided with a hook 7, and the second valve 1-2 can be provided with a slot 8. In this case, the push part 7-1 provided on the second valve 1-2 can be a single cylindrical structure without the need for the second locking part 3. Of course, in this state, the second locking part 3 can still be provided. In this case, the slot 5 and the slot 8 can be staggered in the circumferential direction around the rotation axis of the first valve 1-1.

[0070] In some embodiments, it should be noted that the connecting end 100 and the mating end 200 may have the same structure, both being provided with a pushing part 7-1 and a blocking member 6, which are configured to cooperate with each other. Alternatively, the blocking member 6 may be provided only at the connecting end 100, and the pushing part 7-1 may be provided only at the mating end 200.

[0071] In some embodiments, the connecting end 100 and the docking end 200 may have the same structure. For example, the first valve 1-1 is provided with a groove 8 and a slot 5, and the first valve seat 2-1 is provided with a hook 7 and a pushing part 7-1 provided on the hook 7. Correspondingly, the second valve 1-2 of the docking end 200 is provided with a groove 8 and a slot 5, and the second valve seat 2-2 of the docking end 200 is provided with a hook 7 and a pushing part 7-1 provided on the hook 7. In the docked state, when the second valve seat 2-2 rotates a small angle relative to the first valve seat 2-1, the second valve seat 2-2 and the first valve 1-1 are engaged through the second locking part 3 and the first locking part 4. Simultaneously, the pushing part 7-1 on the second valve seat 2-2 pushes out the blocking element 6 in the slot 5 of the first valve 1-1. Similarly, this means that when the first valve seat 2-1 rotates a small angle relative to the second valve seat 2-2, the first valve seat 2-1 and the second valve 1-2 are engaged through the second locking part 3 and the first locking part 4. At the same time, the pushing part 7-1 on the first valve seat 2-1 pushes out the blocking element 6 in the slot 5 of the second valve 1-2, causing them to push against each other to complete the engagement. Then the second valve seat 2-2 continues to rotate relative to the first valve seat 2-1, so that the second valve seat 2-2 pushes the first valve 1-1 to rotate synchronously relative to the first valve seat 2-1, thereby opening the communication channel 21 on the first valve seat 2-1; at the same time, the first valve seat 2-1 pushes the second valve 1-2 to rotate synchronously relative to the second valve seat 2-2, thereby opening the communication channel 21 on the second valve seat 2-2. In the same configuration, the hook portion 7-4 protrudes circumferentially from the handle portion 7-3 of the hook 7.

[0072] In some embodiments, the connecting end 100 and the mating end 200 are engaged by the second locking part 3 and the first locking part 4: First valve seat 2-1 and second valve seat 2-2 can be engaged by the second locking part 3 and the first locking part 4, in which case the pushing part 7-1 is disposed on the second valve seat 2-2; first valve 1-1 and second valve seat 2-2 can be engaged by the second locking part 3 and the first locking part 4, in which case the pushing part 7-1 is disposed on the second valve seat 2-2; first valve seat 2-1 and second valve 1-2 can be engaged by the second locking part 3 and the first locking part 4, in which case the pushing part 7-1 is disposed on the second valve 1-2; first valve 1-1 and second valve 1-2 can be engaged by the second locking part 3 and the first locking part 4, in which case the pushing part 7-1 is disposed on the second valve 1-2. As shown in the attached figures, first valve 1-1 and second valve 1-2 are engaged by the second locking part 3 and the first locking part 4.

[0073] In some embodiments, considering that during installation of the mating end 200 and the connecting end 100, it is necessary for them to move relative to each other along the mating direction so that the second locking part 3 and the first locking part 4 are relative to each other in the mating direction, and then move relative to each other in a direction perpendicular to the mating direction to enter a locking state. Therefore, the corresponding pushing part 7-1 also needs to move relative to each other in the locking direction first. In order to avoid the locking shoulder being limited only on one side, it is preferable that the blocking member 6 has a groove 6-1 for cooperating with the end of the pushing part 7-1 so that the pushing part 7-1 enters the groove 6-1 along the mating direction, and the groove 6-1 forms a slope along the first groove wall 6-2 along the pushing direction of the pushing part 7-1, that is, the aforementioned guide slope, so that when the pushing part 7-1 moves forward along the pushing direction, the pushing member 6 can slide out of the slot 5. The groove 6-1 avoids the end of the pushing part 7-1, so that the outer side walls of the groove 6-1 on both sides in the pushing direction abut against the groove walls on both sides of the slot 5 to achieve contact, thereby achieving a limit. It should be noted that the pushing direction is the direction in which the pushing part 7-1 follows the movement of the second valve 1-2 or the second valve seat 2-2 where it is located.

[0074] In some embodiments, considering that the connection end 100 and the docking end 200 are docked, the first valve 1-1 of the connection end 100 is subjected to unidirectional force, so that the front end of the blocking member 6 can be provided with only a protrusion, without the need to form a groove 6-1, and a guide slope can be provided on one side of the protrusion.

[0075] In some embodiments, considering that the pushing part 7-1 needs to fit the slot 5 as closely as possible so that the end size of the pushing part 7-1 is sufficient to ensure strength, it is preferable that the pushing part 7-1 has a relief slope 7-2 on the rear side in the pushing direction, and the groove 6-1 forms a slope along the second groove wall 6-3 in the pushing direction of the pushing part 7-1 to cooperate with the aforementioned relief slope 7-2.

[0076] In some embodiments, the groove 6-1 may form opposing inclined surfaces on both sides of the groove wall in the pushing direction, with the second groove wall 6-3 and the first groove wall 6-2 having opposite inclination directions. The inner surface of the first groove wall 6-2 is the aforementioned guiding inclined surface for abutting against the pushing part 7-1. When the pushing part 7-1 extends into the slot 5, it is located in the groove 6-1. Initially, when the relative movement in the docking direction is completed, the avoidance slope 7-2 and the slope of the second groove wall 6-3 approach or even touch. When the end of the pushing part 7-1 is at a certain distance from or abuts the first groove wall 6-2 on the front side of the pushing direction, the pushing part 7-1 moves along the pushing direction with the second valve 1-2 or the second valve seat 2-2 where it is located. The end of the pushing part 7-1 pushes the first groove wall 6-2 on the front side of the pushing direction, so that the blocking member 6 where the groove 6-1 is located slides perpendicular to the pushing direction, so as to gradually withdraw from the corresponding slot 5. Of course, at this time, the guiding slope formed by the end of the pushing part 7-1 on the front side of the pushing direction can abut against the front protrusion of the groove 6-1 (which can be the above-mentioned slope or end), so as to push the blocking member 6 to slide perpendicular to the pushing direction.

[0077] In some embodiments, when the slot 5 is provided at the inner end of the slot 8 to serve as a receiving groove for the hook portion 7-4 of the hook 7, the depth of the slot 5 in the axial direction is generally consistent with the width of the hook portion 7-4 in the corresponding direction. When the hook portion 7-4 of the hook 7 passes through the slot 8 and enters the slot 5, it enters the groove 6-1 at the end of the stopper 6. As the hook portion 7-4 of the hook 7 rotates, the hook portion 7-4 enters the space of the slot 5 that is offset from the slot 8, that is, the extended space. At this time, the hook portion 7-4 and the inclined surface of the stopper 6 abut against each other, so as to gradually push out the stopper 6.

[0078] In some embodiments, the first valve 1-1 can be rotatably mounted on the first valve seat 2-1 so as to rotatably open and close the communication channel 21.

[0079] In some embodiments, the second locking part 3 and the first locking part 4 can be locked together by rotation, and the rotation axis is consistent with the rotation axis of the first valve 1-1, so as to achieve rotational locking through the second locking part 3 and the first locking part 4, thereby achieving axial locking.

[0080] In some embodiments, the blocking member 6 can abut against the first valve seat 2-1 via the second elastic device 11, so that the blocking member 6 can be pushed into the slot 5 by the second elastic device 11. Considering the need to provide a groove 6-1 to avoid the end of the pushing part 7-1, the span of the blocking member 6 is relatively large in the pushing direction, and at least two second elastic devices 11 can be arranged side by side along the pushing direction. Specifically, the blocking member 6 can include a block, wherein one end of the block has two triangular blocks, which are centrally located, and the inclined surfaces of the two triangular blocks are arranged opposite each other to form the groove 6-1. The block and the first valve seat 2-1 are slidably engaged, and the two triangular blocks, on opposite sides, abut against the opposite sides of the slot 5 to achieve limiting, that is, the contour formed by the opposite sides of the two triangular blocks engages with the slot 5 for slidable engagement, and preferably the cross-section of the slot 5 is smaller than the cross-section of the block to prevent the block from entering the slot 5, thereby limiting the entry depth.

[0081] Based on the connection end 100 of the fluid connector provided in the above embodiments, the present invention also provides a fluid connector, which includes any one of the connection ends 100 in the above embodiments, and further includes a mating end 200, wherein the connection end 100 and the mating end 200 can be connected in a mating manner. Since this fluid connector uses the connection end 100 in the above embodiments, the beneficial effects of this fluid connector are explained in the above embodiments.

[0082] In some embodiments, the mating end 200 of the fluid connector may include a second valve 1-2 and a second valve seat 2-2. A stop pin 14 is installed on the second valve 1-2, and the second valve 1-2 is snapped into contact with the first valve 1-1 of the connecting end 100. When the stop pin 14 and the locking hole 13 on the first valve 1-1 are aligned, the second valve 1-2 and the first valve 1-1 are aligned with each other through the communication hole 22, and at this time the first valve 1-1 and the second valve 1-2 are snapped into contact.

[0083] In some embodiments, the fluid connector allows the stop pin 14 to abut against and slide on the second valve 1-2 via a third elastic device 12; the second valve 1-2 is provided with a hook 7, and the first valve 1-1 is provided with a groove 8 to achieve a snap-fit ​​connection; the second valve 1-2 is rotatably mounted on the second valve seat 2-2 with its rotation axis aligned with the rotation axis of the first valve 1-1, and the outer side of the second valve seat 2-2 has an operating structure 9 for pushing the second valve 1-2 to rotate. The operating structure 9 is, for example, an operating sleeve.

[0084] In some embodiments, one of the cooperating first locking portion 4 and the second locking portion 3 may be disposed on the hook 7, and the other may be a locking groove 8. The hook 7 includes a handle portion 7-3 and a hook portion 7-4 that protrudes circumferentially along the rotation axis of the first valve 1-1, with the protrusion direction consistent with the aforementioned pushing direction. The hook portion 7-4 constitutes a locking portion, allowing the locking portion to rotate circumferentially to achieve rotational locking. The corresponding locking groove 8 is used for the hook 7 to extend along the rotation axis direction. Then, the hook 7 rotates relative to the locking groove 8 around the rotation axis, causing the locking portion to rotate to be positioned opposite the locking shoulder, thereby achieving abutment in the extension direction of the rotation axis and preventing separation in the mating direction. Specifically, at the end of the locking groove 8 away from the mating end 200 in the groove depth direction, a locking shoulder is formed on the front side in the pushing direction. This allows the hook 7 to enter the locking groove 8 and move along the pushing direction, causing the hook portion 7-4 to enter the end edge of the locking groove 8 away from the mating end 200 in the groove depth direction, thus achieving abutment.

[0085] In some embodiments, the docking end 200 may be provided with a hook 7, the first valve 1-1 may be provided with a groove 8, at least one of the grooves 8 may be a slot 5 of the connecting end 100, and the hook 7 provided corresponding to the slot 5 may be a pushing part 7-1 of the docking end 200.

[0086] In some embodiments, the locking part and the stop pin 14 can be simultaneously disposed on the second valve 1-2 or simultaneously disposed on the second valve seat 2-2. For example, the stop pin 14 is slidably mounted on the second valve 1-2 along the mating direction, while the locking part is fixedly disposed on the second valve 1-2; or the stop pin 14 is slidably mounted on the second valve seat 2-2 along the mating direction, while the locking part is fixedly disposed on the second valve seat 2-2.

[0087] In some embodiments, the second valve 1-2 may be provided with a hook 7, and the corresponding stop pin 14 abuts against the second valve 1-2 via a third elastic device 12 and is slidably mounted on the second valve 1-2. The second valve 1-2 is rotatably mounted on the second valve seat 2-2 with its rotation axis aligned with the rotation axis of the first valve 1-1. The outer side of the second valve seat 2-2 has an operating structure 9 for pushing the second valve 1-2 to rotate. The operating structure 9 can be a lever or a sleeve fitted onto the outer side of the valve seat. Generally, when the snap-fit ​​connection is completed, the hook 7 or other pushing structure can be used to push the first valve 1-1 to continue synchronously moving, thus disengaging it from the aforementioned preset position.

[0088] In some embodiments, a fluid connector is provided, including a connecting end 100 and a mating end 200. The specific configuration of the connecting end 100 and the mating end 200 can refer to any of the above embodiments. The connecting end 100 includes a valve seat and a valve movably disposed on the first valve seat 2-1. A locking hole 13 on the first valve 1-1 is used for the insertion of a stop pin 14 on the mating end 200. An unlocking pin 15 is provided on the first valve seat 2-1. When the first valve 1-1 rotates to a preset position, the unlocking pin 15 can push out the stop pin 14; and during the process of the first valve 1-1 rotating to disengage from the preset position, the first valve 1-1 can push the unlocking pin 15 to move to make room for the locking hole 13 so that the stop pin 14 can be inserted.

[0089] In some embodiments, the mating end 200 is provided with a positioning pin 18 to extend into the second valve 1-2 to prevent the second valve 1-2 from rotating relative to the second valve seat 2-2; the first valve 1-1 has a push rod 17 to push out the positioning pin 18 when the hook 7 extends into the slot 8, so that the second valve 1-2 can rotate relative to the second valve seat 2-2. It should be noted that when the second valve 1-2 rotates relative to the first valve 1-1 to the snap-fit ​​position, or when the second valve 1-2 rotates relative to the first valve 1-1 until their communicating holes 22 are aligned, the push rod 17 should be able to move relative to the positioning pin 18 during this process, and the push rod 17 should remain within the hole of the positioning pin 18. For example, push rod 17 can be an arc-shaped plate so that it can move relative to locating pin 18 during the movement of the second valve 1-2. The thickness of the arc-shaped plate can be less than the diameter of locating pin 18. The arc-shaped groove on the second valve 1-2 corresponding to the arc-shaped plate has a groove width less than the diameter of the hole of locating pin 18. The diameter of the hole of locating pin 18 is equal to the diameter of the pin hole of locating pin 18. Considering the movement of the arc-shaped plate relative to the arc-shaped groove, the groove length should be greater than the length of the arc-shaped plate. The specific difference should at least ensure that the second valve 1-2 rotates relative to the first valve 1-1 until the connecting holes 22 are aligned.

[0090] In some embodiments, a connection end 100 of a fluid connector is provided. For ease of description, the valve of the connection end 100 is a first valve 1-1, and the valve seat of the connection end 100 is a first valve seat 2-1. The first valve 1-1 is rotatably disposed on the first valve seat 2-1, and the direction of its rotation axis is consistent with the docking direction. The first valve 1-1 rotates relative to the first valve seat 2-1 to open and close the communication channel 21 on the first valve seat 2-1. Specifically, the first valve 1-1 has a communication hole 22. When the first valve 1-1 rotates until the communication hole 22 aligns with the communication channel 21, the communication channel 21 is opened. When the communication hole 22 rotates to a position where it is misaligned with the corresponding communication channel 21, the communication channel 21 is closed. The first valve 1-1 is exposed on the docking end 200 surface, at least exposing the communication hole 22 thereon. The first valve seat 2-1 includes a valve body and a valve cover. The first valve 1-1 is clamped between the valve body and the valve cover and is constrained to rotate by the inner surface of the valve cover. A sealing ring 20 is provided between the valve body and the first valve 1-1.

[0091] A push rod 17 is also provided on the exposed side of the first valve 1-1. When the docking end 200 and the connecting end 100 move relative to each other to dock, the push rod 17 can push out the positioning pin 18 on the second valve 1-2 of the docking end 200, so that the second valve 1-2 of the docking end 200 can move relative to the second valve seat 2-2 of the docking end 200 to open and close the connecting channel 21 on the second valve seat 2-2 of the docking end 200.

[0092] The exposed side of the first valve 1-1 is also provided with a slot 8, generally four slots 8, one of which is the slot 8 in the above embodiment, with a corresponding stopper 6. The slot 8 is provided to facilitate the insertion of the hook 7 on the docking end 200 into the slot 8, i.e., to achieve a rotatable engagement with the hook 7 on the docking end 200, wherein the axis of rotational engagement is consistent with the rotation axis of the first valve 1-1. The inner side of the slot 8, i.e., the side away from the connecting end 100, has a receiving groove to accommodate the hook portion 7-4 of the hook 7, allowing the hook portion 7-4 of the hook 7 to move within it until the handle portion 7-3 of the hook 7 abuts against one side of the groove wall of the slot 8, and simultaneously the hook portion 7-4 engages with one side of the groove wall at the corresponding end of the slot 8. The stopper 6 slides with the corresponding receiving groove; for example, the two triangular protrusions of the stopper 6, on opposite sides, abut against the opposite sides of the receiving groove to achieve a sliding engagement.

[0093] When the first valve 1-1 rotates relative to the first valve seat 2-1 until they are offset from each other, i.e., when it rotates to the first position (i.e., the preset position), the first valve 1-1 closes the communication channel 21 on the first valve seat 2-1. The blocking member 6, which slides along the rotation axis of the first valve seat 2-1, extends into the corresponding receiving groove under the action of the second elastic device 11, inserting itself into the receiving groove along the rotation axis to prevent the first valve 1-1 from rotating relative to the first valve seat 2-1. At this time, the unlocking pin 15, which slides along the rotation axis of the first valve seat 2-1, aligns with the locking hole 13 on the first valve 1-1 and can extend into the locking hole 13 under the action of the first elastic device 10, so that the sliding top block 16 within the locking hole 13 is in the ejected state.

[0094] In some embodiments, a mating end 200 of a fluid connector is provided. For ease of description, the valve of the mating end 200 is a second valve 1-2, and the valve seat of the mating end 200 is a second valve seat 2-2. The second valve 1-2 is rotatably disposed on the second valve seat 2-2, and the direction of its rotation axis is consistent with the mating direction. The second valve 1-2 rotates relative to the second valve seat 2-2 to open and close the communication channel 21 on the second valve seat 2-2. Specifically, the second valve 1-2 has a communication hole 22. When the second valve 1-2 rotates until the communication hole 22 aligns with the communication channel 21 on the first valve seat 2-1, the communication channel 21 is opened. When the communication hole 22 rotates to a position where it is misaligned with the corresponding communication channel 21, the communication channel 21 is closed. The second valve 1-2 is exposed on the mating end 200 surface, at least exposing the communication hole 22 thereon. The second valve seat 2-2 includes a valve body and a valve cover. The second valve 1-2 is clamped between the valve body and the valve cover and is constrained to rotate by the inner surface of the valve cover. A sealing ring 20 is provided between the valve body and the first valve 1-2. The first valve seat 2-1 can be referred to the second valve seat 2-2, and will not be repeated here.

[0095] The exposed side of the second valve 1-2 is also provided with an exposed positioning pin 18. The positioning pin 18 slides with the second valve seat 2-2 along the direction of rotation and is inserted into the second valve 1-2 under the action of the fourth elastic device 19, sliding with the second valve 1-2 along the direction of rotation. This prevents the second valve 1-2 from rotating relative to the second valve seat 2-2 when inserted into the second valve 1-2, so that the second valve 1-2 is kept in the closed position. The exposed side of the second valve 1-2 has a hole for inserting a push rod 17 to push out the positioning pin 18, and there is sufficient clearance between the push rod 17 and the corresponding hole to facilitate the movement of the first valve 1-1 relative to the push rod 17 to complete the engagement of the hook 7 and the slot 8.

[0096] The stop pin 14 abuts against the second valve 1-2 or the second valve seat 2-2 via the third elastic device 12, and protrudes from the second valve 1-2 on the side of the second valve 1-2 closest to the first valve 1-1, i.e., the mating side, so that when the connecting hole 22 of the first valve 1-1 and the second valve 1-2 is aligned, the stop pin 14 is aligned with the locking hole 13. The stop pin 14 is axially slidably connected to the second valve 1-2, and its sliding stroke can be constrained by the second valve 1-2.

[0097] A latch 7 is also provided on the exposed side of the second valve 1-2, wherein the latch 7 includes a handle 7-3 and a hook 7-4. The hook 7-4 protrudes from the handle 7-3 in the circumferential direction around the axis of rotation so as to engage with one end of the latch groove 8 in the circumferential direction. Corresponding to the latch groove 8, four latches 7 are provided.

[0098] The docking end 200 also has an operating structure 9, such as a sleeve structure, which is sleeved on the outside of the second valve seat 2-2. The second valve 1-2 and the operating structure 9 are driven by a lever. The second valve seat 2-2 has an arc-shaped groove for the lever to move. The lever passes through the arc-shaped groove and its two ends are respectively connected to the second valve 1-2 and the operating structure 9.

[0099] In some embodiments, the docking process of docking end 200 and connecting end 100 is mainly as follows:

[0100] Before connection, the connecting end 100 and the mating end 200 are completely separated. In the connecting end 100, the first valve 1-1 is in the closed position relative to the first valve seat 2-1, i.e., the aforementioned first position and preset position. At this time, the first valve 1-1 is in the closed state, and the blocking member 6 is engaged in the receiving groove at the slot 8 to restrict the rotation of the first valve 1-1 relative to the first valve seat 2-1. The unlocking pin 15 extends into the locking hole 13 so that the top block 16 is in the ejected state. In the mating end 200, the second valve 1-2 is in the forward position relative to the second valve seat 2-2. At this time, the first valve 1-1 is in the closed state, and the positioning pin 18 is inserted into the second valve 1-2 under the action of the fourth elastic device 19, preventing the second valve 1-2 from rotating relative to the second valve seat 2-2.

[0101] During docking, first align the hook 7 on the second valve 1-2 and the groove 8 on the first valve 1-1, ensuring they are coaxial and side-by-side along the axis. At this point, the connecting holes 22 on the first valve 1-1 and the second valve 1-2 are staggered. The connecting channels 21 on the first valve seat 2-1 and the second valve seat 2-2 are generally aligned. Then, bring the first valve 1-1 and the second valve 1-2 closer together along the rotation axis. The hook 7 is then inserted into the groove 8 until the first valve 1-1 and the second valve 1-2 directly or indirectly abut against each other. At this point, the push rod 17 on the first valve 1-1 pushes the positioning pin 18 out of the second valve 1-2, and the second valve 1-2 is no longer prevented from rotating relative to the second valve seat 2-2. This completes the docking. The stop pin 14 on the second valve 1-2 is then constrained by the first valve 1-1 and remains retracted.

[0102] During the snap-fit ​​process, after the docking is completed, the first valve seat 2-1 and the second valve seat 2-2 are fixed relative to each other. The operating structure 9 is rotated by a preset angle, and the direction of rotation is consistent with the protruding direction of the hook 7-4 of the snap-fit ​​to complete the snap-fit. When the snap-fit ​​is completed, the connecting hole 22 of the first valve 1-1 and the connecting hole 22 of the second valve 1-2 are aligned. Because the positioning pin 18 is disengaged from the second valve 1-2, the second valve 1-2 can rotate relative to the second valve seat 2-2. However, because the first valve 1-1 and the first valve seat 2-1 are limited by the blocking member 6, they will not rotate relative to the second valve 1-2. As the second valve 1-2 rotates, a snap-fit ​​7 on the second valve 1-2 is embedded in the groove 6-1 of the blocking member 6. When the snap-fit ​​7 moves with the second valve 1-2, the hook 7-4 abuts against the inclined surface of the corresponding side of the groove 6-1, and gradually pushes the blocking member 6 out of the receiving groove, i.e., the aforementioned slot 5. After the second valve 1-2 rotates to a small angle position, i.e., after a preset angle, the second valve 1-2 moves from the aforementioned forward position to the closed position relative to the second valve seat 2-2. In the closed position, the second valve 1-2 is still in the closed state. At this time: the hook portion 7-4 of the hook 7 abuts against the inner end of the groove 8 to form a lock in the direction of rotation axis extension, correspondingly completing the locking of the connecting end 100 and the mating end 200 in the axial direction; the handle portion 7-3 of the hook 7 abuts against the corresponding side of the groove 8 on the side protruding from the hook portion 7-4; the blocking member 6 is pushed by the hook portion 7-4 to exit the receiving groove so as not to interfere with the rotation of the first valve 1-1; the connecting hole 22 of the second valve 1-2 is aligned with the connecting hole 22 of the first valve 1-1; at this time, the first valve 1-1 is still in the closed position relative to the first valve seat 2-1. At this time, the stop pin 14 is first constrained by the first valve 1-1. When the connecting hole 22 of the first valve 1-1 is rotated to align with the connecting hole 22 of the second valve 1-2, the stop pin 14 is aligned with the locking hole 13. Since the unlocking pin 15 is located inside the locking hole 13, the stop pin 14 cannot enter the locking hole 13 for braking with the cooperation of the top block 16.

[0103] During the valve opening process, the operating structure 9 continues to rotate. Since the handle 7-3 of the hook 7 abuts against the groove wall of the corresponding side of the slot 8 on the side protruding from the hook 7-4, the second valve 1-2 exerts a thrust on the first valve 1-1 through the hook 7. As the operating structure 9 rotates, the second valve 1-2 rotates accordingly. The rotation of the second valve 1-2 drives the first valve 1-1 to rotate synchronously. At this time, the connecting holes 22 of the first valve 1-1 and the second valve 1-2 remain aligned until they rotate synchronously until the connecting holes 22 of the first valve 1-1, the connecting channels 21 of the first valve seat 2-1, the connecting holes 22 of the second valve 1-2, and the connecting channels 21 of the second valve seat 2-2 are all aligned. At this time, both the first valve 1-1 and the second valve 1-2 are in the open position. During the process of the second valve 1-2 pushing the first valve 1-1 to rotate through the hook 7-4 of the hook 7, the first valve 1-1 leaves the aforementioned closed position, that is, leaves the aforementioned preset position. During this process, it will push the unlocking pin 15 to move to allow the locking hole 13 to open. Since the stop pin 14 is aligned with the locking hole 13 when the connecting hole 22 of the first valve 1-1 and the second valve 1-2 are aligned, and under the action of the first elastic device 10, since the locking hole 13 is no longer constrained by the unlocking pin 15, the stop pin 14 can push the top block 16 to move so that it can enter the locking hole 13. At this time, the first valve 1-1 and the second valve 1-2 prevent each other from rotating relative to each other through the cooperation of the stop pin 14 and the locking hole 13.

[0104] In some embodiments, the separation process of the mating end 200 and the connecting end 100 is mainly as follows:

[0105] Before disassembly, as described above, both the first valve 1-1 and the second valve 1-2 are in the open position, and the hook 7 on the second valve 1-2 abuts against the groove wall of the first valve 1-1 on the side with the hook portion 7-4. At this time, the first valve seat 2-1 and the second valve seat 2-2 still maintain a relatively fixed relationship, and the first valve 1-1 and the second valve 1-2 are connected by the locking hole 13 and the stop pin 14.

[0106] During the process of reversing the rotation to close the valve, the operating structure 9 is then driven to rotate in the reverse direction, thereby causing the second valve 1-2 to rotate in the reverse direction. As mentioned above, since the stop pin 14 remains inserted in the locking hole 13 at this time, when the second valve 1-2 rotates in the reverse direction, the first valve 1-1 is driven to rotate in the reverse direction by means of the cooperation between the stop pin 14 and the locking hole 13.

[0107] Until the first valve 1-1 and the second valve 1-2 rotate synchronously to the closed position, the first valve 1-1 moves to the closed position, i.e., the preset position mentioned above. At this time, the unlocking pin 15 and the locking hole 13 are aligned. Under the action of the first elastic device 10, the unlocking pin 15 overcomes the elastic force of the third elastic device 12 on the back of the stop pin 14, i.e., it pushes out the stop pin 14 through the top block 16. At this time, the stop pin 14 no longer constrains the first valve 1-1. At this time, since the first valve 1-1 moves to the preset position, the blocking member 6 and the corresponding slot 5 are aligned. The first valve 1-1 is constrained to the closed position and cannot continue to rotate. The reason for being constrained may be due to the force between the unlocking pin 15 and the first valve 1-1, or it may be due to the limiting relationship between the first valve 1-1 and the first valve seat 2-1. The first valve 1-1 is prevented from continuing to rotate and remains in the closed position.

[0108] Then, the operating structure 9 continues to drive the second valve 1-2 to rotate. Since the stop pin 14 is pushed out, the first valve 1-1 and the second valve 1-2 are no longer constrained, and the first valve 1-1 remains in the closed position. As the second valve 1-2 rotates relative to the first valve 1-1, the hook 7 rotates correspondingly relative to the first valve 1-1, moving towards the center of the groove 6-1 of the stopper 6. The constraint on the stopper 6 gradually decreases until the hook 7 rotates until the hook portion 7-4 aligns with the groove 8. At this point, the second valve 1-2 rotates to the forward position, preventing it from entering the slot 5 inside the groove 8, thus constraining the relative rotation of the first valve 1-1 and the first valve seat 2-1. Simultaneously, when the second valve 1-2 rotates to the forward position, the positioning pin 18 aligns with the positioning hole on the second valve 1-2. After the second valve 1-2 rotates to the forward position, it is constrained and cannot continue to rotate; at this point, the operating structure 9 cannot further drive the second valve 1-2 to rotate.

[0109] Then, the first valve seat 2-1 and the second valve seat 2-2 are operated, causing them to move relative to each other along the rotation axis. Correspondingly, the first valve 1-1 and the second valve 1-2 also move relative to each other along the rotation axis. At this time, the push rod 17 on the first valve 1-1 gradually moves out of the positioning hole on the second valve 1-2, allowing the positioning pin 18 to gradually enter the second valve 1-2 until the catch hook 7 is completely pushed out of the catch groove 8. At this point, the positioning pin 18 is inserted into the positioning hole of the second valve 1-2, limiting the relative rotation of the second valve 1-2 and the second valve seat 2-2. This completes the final limiting.

[0110] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0111] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting end of a fluid connector for mating with a mating end (200), characterized in that, The connecting end (100) includes a first valve seat (2-1) and a first valve (1-1) movably disposed on the first valve seat (2-1). The first valve (1-1) is provided with a locking hole (13) for the insertion of a stop pin (14) on the docking end (200). The first valve seat (2-1) is provided with an unlocking pin (15). When the first valve (1-1) moves to a preset position, the unlocking pin (15) can push out the stop pin (14); and during the process of the first valve (1-1) moving away from the preset position, the first valve (1-1) can push the unlocking pin (15) to move to make room for the locking hole (13) so that the stop pin (14) can enter.

2. The connection end according to claim 1, characterized in that, The locking hole (13) is disposed through the first valve (1-1). The first end of the locking hole (13) can be used for the insertion of the stop pin (14), and the second end is aligned with the unlocking pin (15) when it is in the preset position.

3. The connecting end according to claim 2, characterized in that, A movable top block (16) is provided inside the locking hole (13). One end of the unlocking pin (15) abuts against the first valve seat (2-1) through a first elastic device (10), and the other end has a pushing ball surface (15-1). The pushing ball surface (15-1) abuts against the top block (16). When the first valve (1-1) moves to a preset position, the pushing ball surface (15-1) can push the top block (16) toward the first end of the locking hole (13) to push out the stop pin (14). And during the process of the first valve (1-1) rotating to get away from the preset position, the first valve (1-1) can act on the pushing ball surface (15-1) to push the unlocking pin (15) away from the second end of the locking hole (13).

4. The connecting end according to claim 3, characterized in that, The unlocking pin (15) is a spherical shape.

5. The connecting end according to claim 4, characterized in that, The cross-sectional area of ​​the second end is larger than that of the first end, so as to prevent the top block (16) from disengaging from the locking hole (13) at the second end.

6. The connecting end according to any one of claims 1-5, characterized in that, The connecting end (100) has a first locking part (4) for locking with the second locking part (3) of the docking end (200). The first valve (101) has a slot (5). The first valve seat (2-1) is movably connected with a blocking member (6). The blocking member (6) extends into the slot (5) to prevent the first valve (1-1) from moving relative to the first valve seat (2-1). After the first locking part (4) locks with the docking end (200), and when the first valve (1-1) is in the preset position, it can be pushed away from the slot (5) by the pushing part (7-1) of the docking end (200).

7. The connecting end according to claim 6, characterized in that, The first valve (1-1) is provided with a groove (8) for engaging with the hook (7) of the docking end (200). At least one of the grooves (8) has a slot (5) at its inner end. The first locking part (4) is formed at the end of the groove (8) facing the slot (5) to engage with the second locking part (3) formed on the hook (7).

8. The connecting end according to claim 7, characterized in that, The first valve (1-1) has a plurality of slots (8) evenly arranged along a circumference. The inner side of one end of the slot (8) in the circumferential direction is the first locking part (4), and the inner side of the slot (8) forms a receiving groove for receiving the hook part (7-4) of the hook (7). At least one of the receiving grooves is the slot (5) to correspond to the blocking member (6).

9. The connecting end according to claim 8, characterized in that, The slot (5) is aligned with the corresponding end of the corresponding slot (8) along the circumferential direction at one end, and the other end is longer than the corresponding end of the corresponding slot (8), so that the bottom of the slot (5) forms the first locking part (4); the first valve (1-1) is rotatably mounted on the first valve seat (2-1) and the rotation axis is consistent with the axis of the circumference of the slot (8).

10. The connecting end according to claim 9, characterized in that, The blocking member (6) has a groove (6-1) for engaging with the end of the pushing part (7-1). The groove (6-1) has a first groove wall (6-2) forming an inclined surface along the pushing direction of the pushing part (7-1) so as to abut against the pushing part (7-1) and be pushed out of the slot (5) when the pushing part (7-1) moves in the pushing direction.

11. The connecting end according to claim 10, characterized in that, The groove (6-1) forms an inclined surface on the second groove wall (6-3) along the pushing direction of the pushing part (7-1) to cooperate with the avoidance inclined surface (7-2) formed by the pushing part (7-1) on the rear side in the pushing direction.

12. The connecting end according to claim 10, characterized in that, The blocking member (6) abuts against the first valve seat (2-1) via the second elastic device (11) so that the blocking member (6) is pushed into the slot (5) by the second elastic device (11).

13. A fluid connector, characterized in that, It includes a docking end (200) and a connecting end (100) as described in any one of claims 1-12, wherein the connecting end and the docking end are capable of being connected.

14. The fluid connector according to claim 13, characterized in that, The docking end (200) includes a second valve (1-2) and a second valve seat (2-2). A stop pin (14) is installed on the second valve (1-2). The second valve (1-2) and the first valve (1-1) of the connecting end (100) are connected by a snap-fit. When the locking hole (13) on the stop pin (14) and the first valve (1-1) are aligned, the communication hole (22) between the second valve (1-2) and the first valve (1-1) is aligned, and at this time the first valve (1-1) and the second valve (1-2) are snap-fitted.

15. The fluid connector according to claim 14, characterized in that, The stop pin (14) abuts against the second valve (1-2) through the third elastic device (12) and is slidably installed on the second valve (1-2); the second valve (1-2) is provided with a hook (7), and the first valve (1-1) is provided with a groove (8) to achieve a snap-fit ​​connection; the second valve (1-2) is rotatably installed on the second valve seat (2-2) and the rotation axis is consistent with the rotation axis of the first valve (1-1); the outer side of the second valve seat (2-2) has an operating structure (9) for pushing the second valve (1-2) to rotate.

16. The fluid connector according to claim 15, characterized in that, The docking end (200) is provided with a positioning pin (18) to be able to extend into the second valve (1-2) to prevent the second valve (1-2) from rotating relative to the second valve seat (2-2); the first valve (1-1) has a push rod (17) to push out the positioning pin (18) when the hook (7) extends into the slot (8).

17. A mating end of a fluid connector, characterized in that, For connection with the connecting end as described in any one of claims 1-12, the valve of the mating end is provided with a slidable stop pin, the stop pin abutting against the valve of the mating end by an elastic device; the sliding direction of the stop pin is perpendicular to the opening and closing direction of the valve of the mating end.

18. A fluid connector, characterized in that, The device includes a connecting end (100) and a docking end (200). The connecting end includes a valve seat and a valve movably disposed on the valve seat. The valve on the connecting end has a locking hole for inserting a stop pin on the docking end. The valve seat on the connecting end is provided with an unlocking pin. When the valve on the connecting end rotates to a preset position, the unlocking pin can push out the stop pin. During the process of the valve on the connecting end rotating to disengage from the preset position, the valve on the connecting end can push the unlocking pin to move, thereby opening the locking hole so that the stop pin can be inserted.

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